static void setup_child_environment(int socket)
{
+ /* On startup, simix_global_init() calls simgrid::mc::Client::initialize(), which checks whether the MC_ENV_SOCKET_FD
+ * env variable is set. If so, MC mode is assumed, and the client is setup from its side
+ */
+
#ifdef __linux__
// Make sure we do not outlive our parent
sigset_t mask;
xbt_assert(fdflags != -1 && fcntl(socket, F_SETFD, fdflags & ~FD_CLOEXEC) != -1,
"Could not remove CLOEXEC for socket");
- // Set environment so that mmalloc gets used in application
- setenv(MC_ENV_VARIABLE, "1", 1);
-
// Disable lazy relocation in the model-checked process to prevent the application from
// modifying its .got.plt during snapshot.
setenv("LC_BIND_NOW", "1", 1);
::close(sockets[1]);
setup_child_environment(sockets[0]);
code();
- xbt_die("The model-checked process failed to exec()");
+ xbt_die("The model-checked process failed to exec(): %s", strerror(errno));
}
// Parent (model-checker):
this->close();
}
+/** Take the initial snapshot of the application, that must be stopped. */
void Session::initialize()
{
xbt_assert(initial_snapshot_ == nullptr);
}
if (getenv("SIMGRID_MC_SYSTEM_STATISTICS")){
int ret=system("free");
- if(ret!=0)XBT_WARN("system call did not return 0, but %d",ret);
+ if (ret != 0)
+ XBT_WARN("Call to system(free) did not return 0, but %d", ret);
}
}